Process for texturing a feed yarn

ABSTRACT

A PROCESS FOR TEXTURING A FEED YARN IS PROVIDED WHEREIN THE FEED YARN IS COMPRISED OF A PLURALITY OF CONTINUOUS SUBSTANTIALLY STRAIGHT FILAMENTS CONSTITUTED AT LEAST 90% BY WEIGHT OF REPEATING POLYMERIC UNITS OF BIS (4-CYCLOHEXYLENE) MATHENE DODECANEDIAMIDE (PACM-12) WITH AT LEAST 60% OF THE BIS(4-CYCLOHEXYLENE) METHANE (PACM) PORTION OF THE UNITS BEING IN THE TRANS-TRANS ISOMER FORM AND   HAVE A CRYSTALLINITY INDEX LESS THAN 20. THE PROCESS COMPRISES FALSE-TWIST TEXTURING THE SAID FEED YARN BY TWISTING THE FILAMENTS TO AT LEAST 50 TURNS PER INCH (T.P.I.), HEATING THE TWISTED FILAMENTS UNTIL THE CRYSTALLINITY INDEX INCREASES   BY AT LEAST 0.5 UNITS BUT NOT OVER A TOTAL OF ABOUT 35 UNITS, COOLING AND UNTWISTING THE FILAMENTS IN A CONTINUOUS OPERATION TO GIVE AN IMPROVED FALSE-TWISTED YARN HAVING ADEQUATE STRETCH, AND FABRICS THEREFORM HAVING GOOD WEARWRINKLE RECOVERY AND GOOD TAILORABILITY.

DEFENSIVE PUBLICATION UNITED STATES PATENT AND TRADEMARK OFFICEPublished at the request of the applicant or owner in accordance withthe Notice of Dec. 16,1969, 869 O.G. 687. The abstracts of DefensivePublication applications are identified by distinctly numbered seriesand are arranged chronologically. The heading of each abstract indicatesthe number of pages of specification, including claims and sheets ofdrawings contained in the application as originally filed. The files ofthese applications are available to the public for inspection andreproduction may be purchased for 30 cents a sheet.

4 Defensive Publication applications have not been examined as to themerits of alleged invention. The Patent and Trademark Oflice makes noassertion as to the novelty of the disclosed subject matter.

PUBLISHED MARCH 4:, 1975 T932,007 PROCESS FOR TEXTURING A FEED YARNDonald Rocky Bradley, 10 S. Clifie Drive, Wilmington, Del. 19809; GeorgeDaniel Null, Good Hope Road, #2, Landenberg, Pa. 19350; and KennethBedros Takvorian, 22 White Clay Crescent, Newark, Del.

Filed Feb. 19, 1974, Ser. No. 443,206 Int. Cl. D02g 1/02 US. Cl. 57-157TS 2 Sheets Drawing. 26 Pages Specification IIDE ANGLE DIFFRACTIUXPATTERN Illll ACCOIPANYIHU RADIAL OENSHUIETER HUGE 0F IIDE MFLE llLlDIH'RACTIOK PATTERH ill! OIFFMCTIUI PATTERN BEAN STOP 1 l l 1 o 0 l 2 5I HBER AXIS m0 DIREClIOlI A process for texturing a feed yarn isprovided wherein the feed yarn is comprised of a plurality of continuoussubstantially straight filaments constituted at least 90% by weight ofrepeating polymeric units of bis(4-cyolohexylene) methanedodecanediamide (PACM-lZ) with at least 60% of the bis(4-cyclohexylene)methane (PACM) portion of the units being in the trans-trans isomer formand have a. crystallinity index less than 20. The process comprisesfalse-twist texturing the said feed yarn by twisting the filaments to atleast 50 turns per inch (t.p.i.), heating the twisted filaments untilthe crystallinity index increases by at least 0.5 units but not over atotal of about 35 units, cooling and untwisting the filaments in acontinuous operation to give an improved false-twisted yarn havingadequate stretch, and fabrics therefrom having good wearwrinkle recoveryand good tailorability.

Filed Feb. 19,

FIG-l D. R. BRADLEY ETAL PROCESS FOR TEXTURING A FEED YARN 2 Sheats-$heet I FILM DIFFRACTION PATTERN MERIOIONAL SPOTIn MERIDIONAL WIDEANGLE DIFFRACTION PATTERN WITH ACCOMPANYING RADIAL DENSITOMETER OF WIDEANGLE FILM OIFFRACTION 'PATTERN SPOTLIII DENSITOMETER TRACE TRACE o mQmaob BEAN STOP FIBER AXIS G TRACING DIRECTION OPTICAL DENSITY March 4,1975 g, D Y gnu, 1332,00!

Paoczss FOR 'rzx'runms A FEED um:

2 Sheets-$heet 2 Filed Feb. 19, 1974 1o, 20 50 40 so so 10 so 90CRYSTALLINITY INDEX

